Everyone in federal court, if you're charged with a federal crime is required to be indicted by a federal grand jury returning what's called a true bill of indictment, unless that right is somehow waved prior to you being charged. They're required to take their investigation in front of a group of people who show up in a closed setting without defense lawyers and present witnesses to actually show the grand jury that there is sufficient evidence to return an indictment and that's a grand jury investigation. They will bring witnesses that may or may not be indictment in order to actually bring charges against one person or a group of individuals.

It's important if you know that you're involved in that to contact a lawyer as soon as possible so that he or she can find out about what's really going on with this thing.